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UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON , D.C. 20549 1934 ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31 , 2020 OR □ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF For the transition period from O'Reilly AUTO PARTS PROFESSIONAL PARTS PEOPLE FORM 10 - K Missouri ( State or other jurisdiction of incorporation or organization ) O'REILLY AUTOMOTIVE , INC . ( Exact name of registrant as specified in its charter ) 000-21318 Commission file number 233 South Patterson Avenue Springfield , Missouri 65802 ( Address of principal executive offices , Zip code ) Title of Each Class Common Stock $ 0.01 par value to ( 417 ) 862-6708 ( Registrant's telephone number , including area code ) Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol ( s ) ORLY Securities registered pursuant to Section 12 ( g ) of the Act : None 27-4358837 ( I.R.S. Employer Identification No. ) Name of Each Exchange on which Registered The NASDAQ Stock Market LLC ( NASDAQ Global Select Market ) Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Yes No Non - accelerated filer Emerging growth company Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15 ( d ) of the Act . Yes No Note - Checking the box above will not relieve any registrant required to file reports pursuant to Section 13 or 15 ( d ) of the Exchange Act from their obligations under those Sections . Indicate by check mark whether the registrant ( 1 ) has filed all reports required to be filed by Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 during the preceding 12 months ( or for such shorter period that the registrant was required to file such reports ) , and ( 2 ) has been subject to such filing requirements for the past 90 days . Yes No Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S - T during the preceding 12 months ( or for such shorter period that the registrant was required to submit such files ) . Yes No Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , a smaller reporting company , or an emerging growth company . See definitions of " large accelerated filer , " " accelerated filer , " " smaller reporting company , " and " emerging growth company " in Rule 12b - 2 of the Exchange Act . Large elerated filer > Accelerated filer Smaller reporting company